CN100582543C - Underwater grouting stereotyped submarine pipeline riser fixing device - Google Patents

Abstract

An underwater grouting fixed-type subsea pipeline standpipe fixing device, which is composed of a snap ring and an elastic capsule, the snap ring is set in a cylindrical shape, and is composed of a symmetrical two-petal arc body, on both sides of the symmetry line of the two-petal arc body Correspondingly, there is a pin shaft connection mechanism and a bolt connection mechanism. There are symmetrical round tubes on the upper and lower ends of the two-petal arc bodies. There is a plug-in sealing joint between the round tube counterparts. The symmetrical round tubes are respectively connected to the two-petal circular tubes The arc body is welded in one piece; there are several cylindrical elastic capsules vertically within the 3 angles of 120° inside the 360° circle formed by the two-petal arc body. The height of the elastic capsule is lower than that of the two-petal arc body. A right-angled elbow is used to connect the upper middle part of each elastic capsule with the round tube at the upper end of the two-lobed arc body, and a horizontal tube is used between the upper part of the lower end of each elastic capsule and the round tube at the upper end of the two-lobed arc body. connection, the upper and lower circular pipes are respectively provided with a grout return pipe and a grouting pipe vertically. The connection mechanism of this equipment is flexible, and the construction is convenient, which creates good conditions for the fixed and comprehensive management of the riser of the submarine pipeline.

Description

Underwater grouting stereotyped submarine pipeline riser fixing device

1. Technical field

The invention relates to an underwater grouting stereotyped seabed pipeline standpipe fixing device.

2. Background technology

Shallow sea oilfields have been developed for more than 10 years. At present, many subsea pipeline riser clips are damaged or fall off. There are many reasons for this phenomenon: ①Severe corrosion in harsh environments; ②Ship impact damage; ③Pipe clip installation and welding The quality is not up to standard, and the long-term ocean current and wave action will fall off; ④The bolts of the pipe clamp are loose, and half of the tiles fall off. The damage to the underwater pipe card caused by the above reasons has lost its fixing effect on the pipe, causing the riser of the submarine pipe to sway or vibrate under the action of the ocean current. Over time, it is very prone to fatigue damage, fracture or leakage safety accidents , will lead to direct and indirect economic losses and even the pollution of the marine environment. The harm is very serious. In addition, because the current underwater welding technology is still in the immature stage, it is also difficult to repair the underwater welding points; on the other hand, The size and specifications of the pipe clamps are difficult to determine due to the size and specification of the pipe clamps due to the specifications and positions of the standpipes, as well as on-site errors during installation. This makes the maintenance and treatment of the old-fashioned pipe clamps an unsolvable technical problem.

3. Contents of the invention

The purpose of the present invention is to provide an underwater grouting fixed-type submarine pipeline riser fixing device, which solves the technical problem of stabilizing the submarine pipeline riser in the above-mentioned prior art.

Technical scheme of the present invention is realized in the following manner:

The present invention is composed of a clasp and an elastic capsule, and is characterized in that the clasp is set in a cylindrical shape and is composed of two symmetrical circular arc bodies, and pin shaft connection mechanisms and bolts are correspondingly provided on both sides of the symmetrical line of the two petal circular arc bodies The connection mechanism is equipped with symmetrical round tubes on the upper and lower ends of the two-petal arc bodies, and a plug-in sealing joint is provided between the counterparts of the round tubes. The symmetrical round tubes are respectively welded with the two-petal arc bodies; A number of cylindrical elastic capsules are vertically arranged in the 3 included angles of 120° on the inner side of the 360° circle formed by the arc, and there is a space for the riser of the submarine pipeline between each included angle of 120°. The elastic capsules are filled with high Molecular material filling, leaving space for the legs of the jacket in the center of the elastic capsule, the height of the elastic capsule is lower than the height of the two-petal arc body, and the top middle of each elastic capsule and the round tube at the upper end of the two-petal arc body A right-angled elbow is used to connect them together, and a horizontal pipe is used to connect the upper part of the lower end of each elastic capsule with the round pipes arranged on the upper part of the lower end of the two-lobed arc bodies. grout pipe.

The invention is set as a rotary opening and closing connection mechanism, which is convenient for fastening up and down the seabed pipeline standpipe and jacket legs; the elastic capsule is filled with solidified polymer materials, which can firmly fix the seabed pipeline standpipe or cable on the conduit On the legs, the problem of comprehensive fixing of multiple submarine pipeline risers has been realized, which reduces the difficulty of construction, saves costs, and creates good conditions for the fixing and management of submarine pipeline risers.

4. Description of drawings

Fig. 1 is a structural representation of the present invention,

Figure 2 is a rear view of Figure 1,

Fig. 3 is a top view of the present invention in application.

In the figure 1-grouting pipe 2-returning grouting pipe 3-capsule grouting port 4-capsule returning grouting port 5-elastic capsule 6-clip 7-bolt fixing mechanism 8-hanging ring 9-pin shaft connection mechanism 10-seabed pipeline standpipe 11-jacket legs

5. Specific implementation

In order to further disclose the technical solution of the present invention, the following will be described in detail through the embodiments in conjunction with the accompanying drawings:

The present invention is composed of a clasp 6 and an elastic capsule 5, and is characterized in that the clasp is set in a cylindrical shape and is composed of two symmetrical circular arc bodies, and a pin shaft connection mechanism is correspondingly provided on both sides of the symmetrical line of the two petal arc bodies 9 and the bolt connection mechanism 7, symmetrical round tubes are arranged on the upper and lower ends of the two-lobed arc bodies, and plug-in sealing joints are provided between the round tube counterparts, and the symmetrical round tubes are welded together with the two-lobed arc bodies respectively; Several cylindrical elastic capsules are arranged vertically within the 3 angles of 120° on the inner side of the 360° circle formed by the two-petal arc bodies. The height of the elastic capsules is lower than that of the two-petal arc bodies. The middle part is connected with the upper end round pipes of the two circular arc bodies with a right-angle elbow, and the upper part of the lower end of each elastic capsule is connected with the round pipes arranged at the upper part of the lower ends of the two circular arc bodies with a horizontal pipe. A grout returning pipe and a grouting pipe are respectively arranged upward.

When applying the present invention, first utilize the hoisting equipment to lift the snap ring 6 through the suspension ring 8 to unload the bolt 7 in the bolt connection mechanism, open the snap ring 6 to embrace the subsea pipeline riser 10 and the jacket leg 11 and connect the bolt 7, Take advantage of the opportunity to place the riser of the submarine pipeline, clamp the riser of the submarine pipeline between the elastic capsules (as shown in Figure 3), and use the grouting equipment to fill the polymer material liquid slurry from the grouting port 1 into the elastic capsule 5, the slurry Enter each elastic capsule through the capsule grouting port 3 of the lower round tube, the slurry returns to the upper round tube from the capsule return port 4 at the top of the elastic capsule, and returns to the return tube 2, and when the elastic capsule is filled with the slurry and there is no residual air, Stop the grouting, tighten the bolt 7 at this time, and clamp the snap ring on the subsea pipeline standpipe and the jacket leg (as shown in Figure 2 and Figure 3). Since the polymer material in the elastic capsule changes from liquid to solid, the snap ring The tighter the card, the tighter it will not loosen, and the snap ring is elastic and can withstand the impact of waves and the collision of ships. It is a good way to fix the riser of the submarine pipeline.

Claims (1)

1, a kind of underwater grouting shaping type submarine pipeline vertical tube fixing device, form by snap ring and elastic capsule, it is cylindrical to it is characterized in that snap ring is made as, two lobe arc bodies by symmetry are formed, both sides correspondence at two lobe arc body symmetrical line is provided with bearing pin bindiny mechanism and bolt connecting mechanism, be provided with the pipe of symmetry on top, two lobe arc body top and bottom, be provided with the plug-in type SEALING FITTING between the pipe counterpart, symmetrical pipe welds one with two lobe arc bodies respectively; In the orientation of 120 ° of 3 angles of 360 ° of inside circumference that two lobe arc bodies are formed, be provided with several cylinders shape elastic capsule on vertical, between each 120 ° of angle, leave the submarine pipeline vertical tube space; Elastic capsule aspect ratio two lobe arc body height are low, the macromolecular material that filling can be solidified in the elastic capsule, encircle the space that the jacket leg is left at the center at elastic capsule, be connected one with elbow bend in the middle part of the top on the every elastic capsule with between the pipe that is located at two lobe arc bodies upper end, between the pipe on top, every elastic capsule lower end and the top, lower end that is located at two lobe arc bodies, be connected, on pipe up and down is vertical, be respectively equipped with slurry recovering tube and grout pipe with horizontal pipe.

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